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Page 12 of 16
20.28 Proxy-Authorization
The Proxy-Authorization header field allows the client to identify
itself (or its user) to a proxy that requires authentication. A
Proxy-Authorization field value consists of credentials containing
the authentication information of the user agent for the proxy and/or
realm of the resource being requested.
See Section 22.3 for a definition of the usage of this header field.
This header field, along with Authorization, breaks the general rules
about multiple header field names. Although not a comma-separated
list, this header field name may be present multiple times, and MUST
NOT be combined into a single header line using the usual rules
described in Section 7.3.1.
Example:
Proxy-Authorization: Digest username="Alice", realm="atlanta.com",
nonce="c60f3082ee1212b402a21831ae",
response="245f23415f11432b3434341c022"
20.29 Proxy-Require
The Proxy-Require header field is used to indicate proxy-sensitive
features that must be supported by the proxy. See Section 20.32 for
more details on the mechanics of this message and a usage example.
Example:
Proxy-Require: foo
20.30 Record-Route
The Record-Route header field is inserted by proxies in a request to
force future requests in the dialog to be routed through the proxy.
Examples of its use with the Route header field are described in
Sections 16.12.1.
Example:
Record-Route: <sip:server10.biloxi.com;lr>,
<sip:bigbox3.site3.atlanta.com;lr>
20.31 Reply-To
The Reply-To header field contains a logical return URI that may be
different from the From header field. For example, the URI MAY be
used to return missed calls or unestablished sessions. If the user
wished to remain anonymous, the header field SHOULD either be omitted
from the request or populated in such a way that does not reveal any
private information.
Even if the "display-name" is empty, the "name-addr" form MUST be
used if the "addr-spec" contains a comma, question mark, or
semicolon. Syntax issues are discussed in Section 7.3.1.
Example:
Reply-To: Bob <sip: This e-mail address is being protected from spambots. You need JavaScript enabled to view it >
